Search

Ching Chang

Examiner (ID: 5925, Phone: (571)272-4857 , Office: P/3748 )

Most Active Art Unit
3748
Art Unit(s)
3746, 3748
Total Applications
1871
Issued Applications
1700
Pending Applications
11
Abandoned Applications
170

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 6603453 [patent_doc_number] => 20100224148 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2010-09-09 [patent_title] => 'HYDRAULIC UNIT FOR A CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE WITH HYDRAULICALLY VARIABLE GAS-EXCHANGE VALVE TRAIN' [patent_app_type] => utility [patent_app_number] => 12/718090 [patent_app_country] => US [patent_app_date] => 2010-03-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 13 [patent_no_of_words] => 4331 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0224/20100224148.pdf [firstpage_image] =>[orig_patent_app_number] => 12718090 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/718090
Hydraulic unit for a cylinder head of an internal combustion engine with hydraulically variable gas-exchange valve train Mar 4, 2010 Issued
Array ( [id] => 6485670 [patent_doc_number] => 20100199945 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2010-08-12 [patent_title] => 'Internal combustion engine valve drive train switching device' [patent_app_type] => utility [patent_app_number] => 12/660929 [patent_app_country] => US [patent_app_date] => 2010-03-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2506 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0199/20100199945.pdf [firstpage_image] =>[orig_patent_app_number] => 12660929 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/660929
Internal combustion engine valve drive train switching device Mar 4, 2010 Issued
Array ( [id] => 6081681 [patent_doc_number] => 20110214633 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2011-09-08 [patent_title] => 'DURATION EXTENDER VARIABLE VALVE ACTUATION' [patent_app_type] => utility [patent_app_number] => 12/717947 [patent_app_country] => US [patent_app_date] => 2010-03-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 15 [patent_no_of_words] => 2405 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0214/20110214633.pdf [firstpage_image] =>[orig_patent_app_number] => 12717947 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/717947
DURATION EXTENDER VARIABLE VALVE ACTUATION Mar 3, 2010 Abandoned
Array ( [id] => 8894916 [patent_doc_number] => 08474427 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2013-07-02 [patent_title] => 'Tappet' [patent_app_type] => utility [patent_app_number] => 13/142370 [patent_app_country] => US [patent_app_date] => 2010-03-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 7 [patent_no_of_words] => 1610 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 184 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13142370 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/142370
Tappet Mar 3, 2010 Issued
Array ( [id] => 6081691 [patent_doc_number] => 20110214635 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2011-09-08 [patent_title] => 'ENGINE INCLUDING VALVE LIFT MECHANISM WITH STRESS REDUCTION FEATURES' [patent_app_type] => utility [patent_app_number] => 12/716795 [patent_app_country] => US [patent_app_date] => 2010-03-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 2446 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0214/20110214635.pdf [firstpage_image] =>[orig_patent_app_number] => 12716795 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/716795
Engine including valve lift mechanism with stress reduction features Mar 2, 2010 Issued
Array ( [id] => 8531643 [patent_doc_number] => 08307793 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-11-13 [patent_title] => 'Internal combustion engine with two intake valves per cylinder which are actuated hydraulically and have differentiated return springs' [patent_app_type] => utility [patent_app_number] => 12/711729 [patent_app_country] => US [patent_app_date] => 2010-02-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 16 [patent_no_of_words] => 7991 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 189 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 12711729 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/711729
Internal combustion engine with two intake valves per cylinder which are actuated hydraulically and have differentiated return springs Feb 23, 2010 Issued
Array ( [id] => 6222771 [patent_doc_number] => 20100180848 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2010-07-22 [patent_title] => 'VALVE LASH ADJUSTMENT SYSTEM FOR A SPLIT-CYCLE ENGINE' [patent_app_type] => utility [patent_app_number] => 12/711546 [patent_app_country] => US [patent_app_date] => 2010-02-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 15 [patent_no_of_words] => 8812 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0180/20100180848.pdf [firstpage_image] =>[orig_patent_app_number] => 12711546 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/711546
Valve lash adjustment system for a split-cycle engine Feb 23, 2010 Issued
Array ( [id] => 8326928 [patent_doc_number] => 08235015 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-08-07 [patent_title] => 'Internal combustion engine with variable valve gear' [patent_app_type] => utility [patent_app_number] => 12/710010 [patent_app_country] => US [patent_app_date] => 2010-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 8 [patent_no_of_words] => 3423 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 208 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 12710010 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/710010
Internal combustion engine with variable valve gear Feb 21, 2010 Issued
Array ( [id] => 6470103 [patent_doc_number] => 20100212614 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2010-08-26 [patent_title] => 'INTERNAL COMBUSTION ENGINE WITH VARIABLE VALVE GEAR' [patent_app_type] => utility [patent_app_number] => 12/709959 [patent_app_country] => US [patent_app_date] => 2010-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 3869 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0212/20100212614.pdf [firstpage_image] =>[orig_patent_app_number] => 12709959 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/709959
Internal combustion engine with variable valve gear Feb 21, 2010 Issued
Array ( [id] => 6470123 [patent_doc_number] => 20100212618 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2010-08-26 [patent_title] => 'INTERNAL COMBUSTION ENGINE WITH VARIABLE VALVE GEAR' [patent_app_type] => utility [patent_app_number] => 12/709938 [patent_app_country] => US [patent_app_date] => 2010-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 3024 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0212/20100212618.pdf [firstpage_image] =>[orig_patent_app_number] => 12709938 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/709938
Internal combustion engine with variable valve gear Feb 21, 2010 Issued
Array ( [id] => 6470118 [patent_doc_number] => 20100212617 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2010-08-26 [patent_title] => 'INTERNAL COMBUSTION ENGINE WITH VARIABLE VALVE GEAR' [patent_app_type] => utility [patent_app_number] => 12/709032 [patent_app_country] => US [patent_app_date] => 2010-02-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 16 [patent_no_of_words] => 4140 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0212/20100212617.pdf [firstpage_image] =>[orig_patent_app_number] => 12709032 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/709032
Internal combustion engine with variable valve gear Feb 18, 2010 Issued
Array ( [id] => 8662450 [patent_doc_number] => 08375904 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2013-02-19 [patent_title] => 'Early intake valve closing and variable valve timing assembly and method' [patent_app_type] => utility [patent_app_number] => 12/708276 [patent_app_country] => US [patent_app_date] => 2010-02-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 3029 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 141 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 12708276 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/708276
Early intake valve closing and variable valve timing assembly and method Feb 17, 2010 Issued
Array ( [id] => 8526010 [patent_doc_number] => 08302573 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-11-06 [patent_title] => 'Hydraulic camshaft adjuster having an axial screw plug' [patent_app_type] => utility [patent_app_number] => 12/706434 [patent_app_country] => US [patent_app_date] => 2010-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 4589 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 191 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 12706434 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/706434
Hydraulic camshaft adjuster having an axial screw plug Feb 15, 2010 Issued
Array ( [id] => 8024905 [patent_doc_number] => 08141529 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-03-27 [patent_title] => 'Valve timing control apparatus' [patent_app_type] => utility [patent_app_number] => 13/141635 [patent_app_country] => US [patent_app_date] => 2010-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 10695 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 275 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/08/141/08141529.pdf [firstpage_image] =>[orig_patent_app_number] => 13141635 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/141635
Valve timing control apparatus Feb 15, 2010 Issued
Array ( [id] => 8444557 [patent_doc_number] => 08286601 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-10-16 [patent_title] => 'Variable valve timing apparatus' [patent_app_type] => utility [patent_app_number] => 12/705144 [patent_app_country] => US [patent_app_date] => 2010-02-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 8389 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 364 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 12705144 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/705144
Variable valve timing apparatus Feb 11, 2010 Issued
Array ( [id] => 8210654 [patent_doc_number] => 08191524 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-06-05 [patent_title] => 'Valve-train assembly of an internal combustion engine' [patent_app_type] => utility [patent_app_number] => 12/704759 [patent_app_country] => US [patent_app_date] => 2010-02-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 9 [patent_no_of_words] => 3850 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 163 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/08/191/08191524.pdf [firstpage_image] =>[orig_patent_app_number] => 12704759 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/704759
Valve-train assembly of an internal combustion engine Feb 11, 2010 Issued
Array ( [id] => 8150456 [patent_doc_number] => 08166936 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-05-01 [patent_title] => 'Valve timing adjusting apparatus' [patent_app_type] => utility [patent_app_number] => 12/702507 [patent_app_country] => US [patent_app_date] => 2010-02-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 18 [patent_no_of_words] => 7794 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 387 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/08/166/08166936.pdf [firstpage_image] =>[orig_patent_app_number] => 12702507 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/702507
Valve timing adjusting apparatus Feb 8, 2010 Issued
Array ( [id] => 8185663 [patent_doc_number] => 08181614 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-05-22 [patent_title] => 'Internal combustion engine and vehicle incorporating same' [patent_app_type] => utility [patent_app_number] => 12/702530 [patent_app_country] => US [patent_app_date] => 2010-02-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 17 [patent_no_of_words] => 9926 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 166 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/08/181/08181614.pdf [firstpage_image] =>[orig_patent_app_number] => 12702530 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/702530
Internal combustion engine and vehicle incorporating same Feb 8, 2010 Issued
Array ( [id] => 8326922 [patent_doc_number] => 08235011 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-08-07 [patent_title] => 'Actuating device' [patent_app_type] => utility [patent_app_number] => 12/658586 [patent_app_country] => US [patent_app_date] => 2010-02-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 2460 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 211 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 12658586 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/658586
Actuating device Feb 4, 2010 Issued
Array ( [id] => 9151743 [patent_doc_number] => 08584639 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2013-11-19 [patent_title] => 'Valve drive of an internal combustion engine' [patent_app_type] => utility [patent_app_number] => 13/139813 [patent_app_country] => US [patent_app_date] => 2010-02-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 6 [patent_no_of_words] => 3092 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 136 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13139813 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/139813
Valve drive of an internal combustion engine Jan 31, 2010 Issued
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